I never leave reviews but I have to say after seeing the bad reviews about it and taking the risk of buying it myself I really felt the need to try this suspension to verify that I never use a hands-free kit as I use Airpods/headphones instead. So if that's what you need, look elsewhere as the pictures clearly show it does NOT have a microphone. Installation in my 03 Z4 2.5i with a business CD radio was very easy, the hardest part was getting the vents out which was easy using a small toothpick to pry off the silver clips. I unplugged the radio, put this harness between the radio and the factory harness, and turned the key forward. All I had to do was press the mode button to change it to AUX and from there I connected my phone via bluetooth. My adapter turns on when the key is turned and off when the key is removed. If yours stays on, you may need to check your radio wiring and make sure your entire radio doesn't stay on when the key is removed/the door is opened. Like I said, I never leave product reviews, but this one deserves a review and is great at it. The sound quality is exactly the same as all other inputs and it switches on and off properly with the rest of the radio. I hope it lasts but I got a 3 year warranty for $3 so if it breaks I really won't complain.
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